RTC_VL_BACKUP_LOW
tmp = status & ABX8XX_STATUS_BLF ? RTC_VL_BACKUP_LOW : 0;
value |= RTC_VL_BACKUP_LOW;
user |= RTC_VL_BACKUP_LOW;
touser |= RTC_VL_BACKUP_LOW;
flags |= RTC_VL_BACKUP_LOW;
flags |= RTC_VL_BACKUP_LOW;
vlval |= regval ? RTC_VL_BACKUP_LOW : 0;